Calculating machine



Apr. 3, 1923.

is. RICHTER CALCULATING MACHINE J0 sheets-sheet 1 Filed Mar. 24, 1906 Apr. 3, 1923.

E. RICHTER CALCULATING MACHINE 24, 1906 10 sheets-sheet 2 Wk NE t Apr. 3. 1923.

E. RICHTER CALCULATING MACHINE l0 sheets-sheet 3 F3 led Mar. 24, 1906 Apr. 3, 1923.

E. RICHTER CA LCULATI NG MACHINE Filed Mar. 24, 1906 10 sheets-sheet 4 Apr. 3, 1923. 1,450,516

E. RICHTER CALCULATING MACHINE Flled 'Mar. 24, 1906 10 sheets-sheet; 5

Apr. 3, 1923.

E. RICHTER CALCULATING MACHINE Filed Mar 24. 1906 10 sheets-sheet 6 Inf- I mmmmifi minim II- 1,450,516 E. RICHTER CALCULATING MACHINE Filed Mar. 24, 1906 L0 shetzs-sfzeet '2 mm M Apr. 3, 1923.

Apr. 3, 1923.

E. RICHTER CALCULATING MACHINE 10 sheets Filed Mar. 24, 1906 Apr. 3, 1923.

E. RICHTER CALCULATING MACHINE Filed Mm, .34, 1906 10 sheenssheet 9 1,450,516 E. RICHTER CALCULATING MACHINE Filed Mala 24, 1906 vI0 sheets-sheet 10 c Q m Apr. 3, 1923 Patented Apr. 3, 1923.

UNITED STATES PATENT OFFICE.

EMANUEL RICHTER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ELLIOTT'FISHER COM- PANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

CALCULATING MACHINE.

Application filed March 24, 1906.

To all whom it may concern:

Be it known that I, EMANUEL RICHTER, a citizen of the United States of America, re siding at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Calculating Machines, of which the following is a descri tion.

y invention belongs to that class of de 104 vices particularly desi ned to mechanically calculate the sum or diti'erence between the sums of a plurality of columns of numbers and has for its object the production of a more simple, accurate, and durable device for the urpose set forth.

To this end my invention consists of the novel construction, arrangement and combination of parts herein shown and described and more particularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like or corresponding p Figure 1, is a top plan of my improved device,

Figure 2, is'a similar view with the top plates removed to more clearly show the working parts,

'Fi re 3, is a continuation of view shown in Figure 2, the sheet containing the same being intended to be placed at the bottom of the sheet containing Figure 2, to complete the top plan of the structure,

Figure 4, is a vertical section in line 44 of Figure 2, viewed in the direction indicated by the arrow,

Figure 5, is a section taken in line 5-5 of Figure 4, viewed in the direction indicated by the arrow,

Figure 6, is an end elevation with the easing broken away to show the construction,

igure 7, is a side elevation with the easing removed. showing the construction as viewed from the left in Figure 5,

Figure 8, is a detail perspective view of the carriage and its connections, together with parts of the reversing mechanism, said view being taken from the direction of the upper left hand corner of Figure 2,

Figure 9 is a detail perspective view of the indicating wheels, showing the locking and carrying mechanism for the same.

Figures 10 and ll. are detail views of a portion of the transmitting mechanism. showing the part in iliil'crent positions,

Serial No. 307,942.

Figure 12, is an end view of one of the numeral or indicating wheels,

Figure 13, is a ilianietrical section of the same showing the construction of the operat ing clutch therefor,

Figures 14, 15 and 16, are detail views of the escapement mechanism, controlling the lateral movement of the carriage,

Figure 17, is a partial section in line [7-47 of Figure 16,

Figure 18, is a partial detail plan with parts broken away, showing a modification of my improvement,

Figure 19, is a. detail view of a part of the reversing mechanism, and

Figure 20, is a detail view.

As shown in the drawings. 1 is a suitable casing or frame provided with a plurality of vertically movable keys 2 each provided with an inclined section 3 or equivalent means for a purpose hereafter stated. Figure 4). 4, is a longitudinally movable bar provided with an anti-friction roller 5 arranged in the path of and adapted to con- (act with the inclined face 3 of the keys 2. (Figures 4, 10 and 11). The number of bars 4 preferably corresponds with the number of, keys 2. A plurality of longitudinally movable stop bars 11, ane each provided with a shoulder or stop 13, or an equivalent part arranged in the line of travel of the bars 4. A transverse shaft 9. has loosely mounted thereon a plurality of arms or levers 10, each of which levers is connected to a bar 11. in any preferred manner. As shown this is accomplished by the connecting link 12, pivotally connected to the end of a stop bar 11, and to an arm 10. As any one of the bars 11. is reciprocated, therefore, the lever 10, will be loosely oscillated on the shaft 9. As previously stated the several shoulders 13 are constructed in line with the longitudinal travel of the bars 4. so as to r'ontacttherewith and be operated thereby. The several shoulders 13. however, are ar ranged at different points on the several bars 11. so as to extend in a diagonal direction across the several bars as shown in Figures 2, and 3. As a key' 2. is depressed its movement causes the longitudinal movement of its bar 4, which contacting with the houlder 13. on a hut ll. longitudinally movothe same and oscillates the arm 10. ina much as the travel of the bar 4 is always the same no matter which of the keys may be depressed, the several shoulders are positioned diagonally as described, so that with the same longitudinal movement of the bar 4, the several bars 11 will have a diflen ent or varyinglimit of travel or movement as hereafter stated. This varying movement of the travel of the several bars H, also varies the oscillation of the arms 10, upon the shaft 9, on which shaftthe arms are loosely mounted. Means are provided to return the bar 4,- to its normal position as shown in Figure 4. Thismay be accomplished in any preferred manner. As shown a spring 15, connected to saidbar at one end and at the other end to a fixed part or portion of the frame aecomplishesthis purpose. Similarly springs'21, orequivalent means returnthe several bars '11, to their normal position. (See Figures 4, 5, 10 and 11).

A ratchet wheel 16, or an equivalent part is ffixed'fto the shaft 9, near each arm or lever 10, and a pawl '17, carried by the said lever engages theteeth of'the ratchet wheel and rotates the same and the shaft 9, as the lever is oscillated, Figures 4, 10 and 11, also- Figure 7.) The shaft 9, carries a cog wheeljflfl, secured thereto, (Figures'2, 5 and' 7,') which, mesheswith a pin ion or cog-wheel; 19, secured to a shaft 20, eitending'parallel to the shaft 9. The varying partiahrotation of the shaft 9, caused by the depression of'any of the keys 2, is therefore, transmitted to the shaft 20. Upon the shaft 20, are loosely mounted a plurality of indicators, numeral wheels or denominational members 22, maintained in relative position upon the shaft in any preferred manner. As shown in Figure 1 3, a circumferential groove 23, is formed n the shaft, in which a. pin or projection 24, on the wheel is loosely seated. In the preferred cond'ruetion two or more. series of such numeral wheels are employed as clearly shown in Figure 2. Each series of number wheels constitutes a totalizer, receiving mechanism, register or computing device, as it is variously termed in the art. Each heel 22, is formed with a part of its pe riphery 25, cogged and extending partly across its face, for a purpose hereafter described. One member 26 of a clutching device is also secured to and carried by the wheel. (Figure 9, and 13). The other member 27, of the clutch device is loosely splined, keyed or otherwise so secured to the shaft 20, as to rotatetherewith and at the same time be permitted a longitudinal movement thereon. A parallel shaft 28, is arranged near the shaft 20, and has loosely mounted thereon a plurality of carrying and locking wheels 29. These wheels are longitudinally movable on the shaft 28, and are normally held in proper relative position by springs 30 or equivalent means arranged for that purpose (Figure 2). The

carrying and locking wheels 29, are each provided with a part 31, cogged to mesh with the part 25, of its companion wheels 22, with which it is constantly in mesh the two being formed to permit the movement of the wheel 29, longitudinally the shaft 28, without disengaging them. The wheel 29 is also provided with a cogged part 32, preferably provided with alternate short cogs 33, and long cogs 34, while between the two parts 31 and 32, provision is made for engaging shifting mechanism. As shown the pivoted lever 35, has it extending arms 36, 36, (Figure 8) adapted to engage with a centra peripheral roove 38, in the heels 29, (Figure 9). T e numeral wheels 22, are each provided with a single peripheral groove 39, formed to engage the larger cogs 34, of the wheel 29, as the numeral wheel is rotated and thus advance the wheel 29, a sufficientdistanoe to carry the numeral wheel engaging the cogs 31, one interval. This constitutes: my carrying means. In the preferred form an extension 40, is formed on the side of the numeral wheels which asthe latter are.rotated, first contacts with one of the shorter cogs 33, partially rotatin the wheel 29 and positively engaging the onger cog 34, with the "move 39. The distance between two of theiarger Eogs 34, is so proportioned that they will be positioned at all times, except when advaneing, to ride upon the periphery of the adjacent numeral wheel when engaging with the same, as shown in Fi ure 9. while the cogged' part is at all time in mesh with companion numeral wheel. The numeral wheel at the left in Figure 9, is therefore, effectively locked against accidental dis placement or rotation. This. the normal position is maintained until the wheel 29, by the operation of the device is moved to the left, (Figure 9) a sutficient distance for the same to clear the numeral wheel to the ri ht as will be hereafter explained.

he levers 35, are each pivotally connect ed to afixed part 41, and each engages a clutch member 27, as well as a wheel 29, with the exception of those on the extreme right of the series of numeral wheels (Figure 2). A movable slide 42, or equivalent part is arranged to contact with each lever 35, and by its movement oscillate the lever on its fulcrum 41. When released the spring 30, on the shaft 28, or other suitable means return the parts to their normal positions.

A transversely movable carriage 43, (Figures 1, 2, 8. 5, and 18,) is arranged in suitable guides or ways, and an extension 44, preferably provided with an antifriction roller 45, extended in line with the several arms 42. so that in passing it will Contact with the inclined faces 46. of the several slides 42. and longiturliiuilly lIIll move said slides and operate the levers 35, and the parts dependent thereon. The extension 44, is pivotally supported at 47, a spring 48, holding it normally in position. Thus hile substantially fixed and rigid when moving in one direction as toward the right and thus operating the several slides 42, on reversing the movement and moving the carriage in the opposite direction to return it to itsproper operating position, the contact will depress the spring 48, and not operate said arms. In the preferred form a spring pulley 49, driven by a spring 50, (Figures 2, and 5,) together with a strap or band 51, (Figure 4) secured at one end to the periphery of the pulley and at the other end to the carriage, tends to draw the carriage in that, its operative, direction, as in well known forms of typewriters.

Referring now particularly to Figures 4, and 6, a transverse shaft 52, is arranged near the keys 2, and provided with a plurality of extending arms 53, corresponding in numher with thekeys and eaohadapted to contact with the face'of 'a rib 53.1/2, formed on the keys, or an equivalent part, when the latter are depressed. The several arms 53, are keyed or otherwise securedto the shaft and as a result depression of any one of the several keys will rock or artially rotate the shaft 52. A depression 1?, is formed on the face of 'the ribs 53.1/2, at a proper point within which the head Y, of the arms 53, may be seated when the parts are in their normal position (see Figure 4). Until the key reaches its normal position, therefore, the arm 53 cause the shaft 52, to retain a partially rotated position, as'will more fully be explained hereafter. One of the arms 53, contacts or engages with a longitudinally movable bar 55, rovided with escapement trip arms 5656 {Figures 4, 14, 16, and 17). A spring 57, tends to return the bar to its normal position. A shaft 58 is provided with an escapement wheel 59, loosely mounted thereon and provided with projecting teeth 60, co-acting with the trip arms 56, to limit the rotation of the wheel and its shaft in a manner employed in typewriters and similar devices. Any preferred means may be employed to retain the esca ement wheel in proper relative position on t e shaft. As shown in Fi ure 16, a circumferentialgroove 61 is formed on the shaft and a pin 62, extending through a sleeve on the wheel into the groove keeps the arts in position. An internal ratchet wheel 63, is secured to the shaft 58, by a key 64, or equivalent means, and a pawl 65. carried by the esca ement wheel 59, co-acting therewith permits the shaft 58 to be rotated in a reverse direction without disturbing the escapement wheel 59. The shaft 58, has also fixed thereto a cog- \\'hcel 66, meshing with a cog-rack 67, se-

cure'd to the carriage 43, (Figures 4, 5, 8, and 14).

It will thus be seen that the tendency of the connection of the spring pulley 49, is to draw the carriage toward it and the engagement of the cog-rack 67 with the cogwheel 66, together with the escapement and its connections causes the depression of any key to permit the forward movement of the carriage one interval as in typewriters and similar devices. In the machine shown in the drawings the movement of the carriage is toward the right when in operation.

The operation as thus far described is as follows, referring particularly to Figure 3, and to the lower half of Figure 2, where two series of numeral or indicator wheels are shown to enable two columns of numbers to be separately totaled, as well as to Figures 4, 5, 6, 7, and 8, and the detail drawings referred to. The operator having before him two columns of numbers, which may represent the debit and credit side of an account as shown on a ledger, he be ins by indicating the numeral of the highest order. Thus if the first number in the ml- -umn be 1234.62, he will place the carriage so that the extension 44, is to the left of the movable arm 42, operating the numeral wheel indicating thousands which as shown in the drawings will be the arm 42, to the extreme left. By pressing the key 1, the movement of the key operates the escapement permitting the carriage to move to the right a part of one interval. The extension 44. will contact withthe inclined face 46, of the arm 42, and longitudinally move said arm, operating the lever 35, and the clutches 26 27, and releasing the first numeral wheel from the interlocking connection with the second numeral wheel by the movement of the wheel 29, longitudinally the shaft 28, as described. The extension 44. rests against the end of the slide 42, holding the parts in the position described until the key is released. While this operation is takin place the arm 4, (Figure 4) is longitut inally moved contacting with the shoulder 13, and longitudinally moving the proper bar 11, the predetermined distance. the arm 10 is oscillated, the ratchet wheel 16, shaft 9, cog-wheels 18, and 19, and shaft 20. are all rotated the proper distance to retate the first numeral wheel to indicate the proper numeral, all the parts bein timed to promptly and accurately perform this operation. As the key is released the several springs and the construction described return the parts to their normal positions. The first numeral wheel being retained and locked by the wheel 29, as described, in the position assumed. maining numerals going to make up the number are indicated the operator successively operating the 2. 3, 4, 6, and 2, keys.

In like manner the re-- in like manner the next number is indicated. ll. for example the next number he 963.43 lhc addition will necessitate the carrying from one order to another at two points, the lil'th and the second. Moving the carriage to the left so that the extension 44, is just to the left of the second slide 42, from the left indicating the order of hundreds the spring 45, permitting the extension 44, to pass by the several bars 42, and pressing the key 9, the operation will be as before described with the exception that as the second indicator wheel 22, already has 2, indirated the addition of 9, will more than complete its rotation or cycle, and as it completes its cycle the extension 40, on the wheel 22, contacts with the short cog 33, on the wheel 29, partially rotating said wheel to positively engage the cog 34, with the groove 39, and rotating the first numeral or indi cator wheel to the left, one interval, carrying one to that order and thus indicating 2, where before it indicated 1. The balance of the number isindicated in the same manner one being also carried to the third order. When the debit has been fully added as set forth, the indicators will show the total footing.

For adding the credit column the carriage is moved to the right to operate the second series of indicator wheels and the operation is the same. When the operation is completed the total footings of both the debit and credit columns will be indicated side by side in pro er relative. positions, greatly facilitating t e labor and avoiding errors, the accuracy in computing being assured.

In the drawings I have shown the numeral or indicator wheels in series of six. Thus arranging to indicate up to the sixth order, or in the case of dollars and cents 0 indicate cents and the value of dollars up to the thousands place. It is obvious however that these may be increased or dereased as desired, to adapt the device to any particular use or business. Consequently I do not wish to be understood as limiting myself in this direction.

In some cases it is desirable, to find the grand total of two or more columns of figures. This may be accomplished upon my machine, in a simple manner, as hereafter described. Upon the end of the shaft 20, is arranged a cog-wheel 6S, meshing with a similar cog-wheel 69, arranged to rotate at the same rate of speed, mounted on a shaft 70, (see Figures 2. and 7). Upon the shaft is arranged an additional series of humeral wheels 71, similar in construction and arrangement to those shown upon the shaft 20. Longitudinally movable slides T2. similar in construction and arrangement wi h the slides 42. together with levers T3. operating a clutch memher i4, and carrying \vhecls T3. mounted on a para lel shaft it all substantially the same in cimstruction and operation with those heretofore described, serve to transmit the rotation of the shaft i l to the several indicator wheels as has been heretofore described. The several parts are so proportioned arranged and timed. that the rotation of the shaft 20 is transmitted to the shaft 70. as indicated, while an extension 701/2, formed on the carriage 43. carries an extending arm 77, similar in construction and arrangement with the arm 44, heretofore described. It will be observed that if but one series of indicator wheels is arranged on the shaft 20, but one arm 77, will be necessary, and upon the proper arrangement of the parts the indicator wheels on the shaft 70, will indicate in unison with those upon the shaft 20, in a continuous operation. If however a plurality of series of indicator wheels are used, as indicated in Figure 2, of the drawings, then the extension 76 1/2, must be provided with anextending arm for each series of indicator wheels. A second arm is, therefore, shown at 77 1/2. The said arms are arranged to be in proper position to ope ate. the indicating device on shaft 70, according to the movement of the particular series of wheels on the shaft 20, for which said arm 77, or- 77 1/2, may be arranged.

For example in the construction shown in Figure 2. the arm 77, at the right of the extension 76 1/2 will operate the indicating device when the series of indicator wheels at the left on the shaft 20 are operated, When that column of figures has been totaled the series of wheels on the shaft20, and-on.the shaft 70, will both indicatethe proper totaling. At this point, however, the carria e is shifted to the right for the purpose 0 operating the series of indicatmg wheels at the right on the shaft 20. This will brin the extension 77 1/2, shown on the left 0 the extension 76 1/2, into proper position to operate the indicator wheels on the shaft 70. By this means when the adding of the column of numbers represented by the second series of indicator wheels on. the shaft 20 is completed, the rand total of .both columns of numbers will be indicated by the. indicator wheels 1- tioned upon the shaft 70. Figure 18, shows the machine particularly arranged to total four separate columns, there being four sets or series of indicator wheels upon the shaft 20, each of which will represent a separate column of numbers. The indicator wheels on the shaft 70 will indicate the grand total of all of them while each series on the shaft 20 will indicate the total of its particular column.

The machine is also constructed so that the indicators upon the shaft 70, instead of giving the grand total, will show the dilleu ence between the sums of two columns of numbers. As shown the cog-wheel 69, is loosely mounted upon the shaft 70, and carry ing one clutch member 79, while the second clutch member 80. is mounted upon and rotates with the shaft but is longitudinally movable thereon. A shaft or bar is loosely mounted in hearings formed in standards 94, so as to permit of a longitudinal movement of the shaft. .'\n arm 93, secured to the shaft 93, and carried thereby enga es the clutch member 80, on the shaft 70. Figures 2 and 19). A spring 81, or equivalent means, tends to force the shaft 93, and the clutch member 80. in a direction to normally engage the clutch 80, 79, when the rotation of the wheel 69, will be transmitted to the shaft 70, with the result be fore stated. A cog-wheel 83. is loosely mounted upon the shaft 70, the two wheels 82, and 83, being in line (Figures 2 and 4). An intermediate cog-wheel 84, meshing with both the cog-wheels 82 and 83, causes them to rotate in the same direction and in unison. The cog wheel 83, carries a clutch member 85, while the shaft 70, carries the companion member 86 rotatin therewith, and longitudinally movable t ereon. An arm 96, is secured to the shaft or bar '93, and controls the clutch member'86, (Figure 19).

As shown in Figures 4, 5, and 19, a sleeve or equivalent means is secured to the shaft 93, or formed thereon and an annular lever 88, pivotally connected as at 89, engages the sleeve 87, in such. a manner that the horizontal oscillation of the lever 88, will longitudinally move the shaft 93, and control the 0 ration .of the'clutches on the shaft 70. Xii extending'bar'or' arm 90, carried by the oarria-gfitl, iseonst lfuoted to contact with-.the lever 88, as tho'car'riage is in proper position by accident or otherwise, in asmuch as the locking means are not particularly applied to those particular wheels. The levers 35, as ap lied to those particular wheels upon the l'lgq'lt of the series, do not engage a'locking and carrying wheel, as there is no lower order from which such amount should be carried. This is clearly shown in Figure 2. The end of the levers are rovided with a spring 102, engaging with a part to properly return the clutches and levers 35, to their. properand normal position. A pointer 103, shown particularly in Figures 1, and 8, is employed to indicate the proper position of the carriage 43. duringthe operation of the device. A handle 104, or equivalent means is also provided for reversing the position of the carriage after a number has been indicated as before set forth.

The key indicating the character 0, is not provided with a bar 11. as it will not be necessary for this to transmit motion to the shaft 20, operating that key. It is however,

provided with usual vertical bar 53, and rotates the shaft 52, as before set forth. Thus operating the escapement device and permitting the carriage to move one interval t0 the right to be in position for the next number indicated.

It is obvious that as to which particular numeral wheel will be engaged with the shaft and operated thereby, when a key is depressed, will depend upon the position of the carriage 43. Hence where in the specification or claims I have referred to means for transmitting the movement of either of the keys to engage either of the indicator wheels" with the shaft. or where therein I have said to engage its indicator wheel" with the shaft, I wish to be understood as meaning means for transmitting the movement of the keys to either of the indicator wheels to engage the same with the shaft, depending upon the position of the connectmg means.

It is obvious that various modifications may be made without departing from the spirit of my invention, and I do not wish to be understood as limiting myself to the exact form and construction shown.

Having thus described my invention. what I claim as new and desire to secure by Letters Patent is:

' 1. In a computing machine, operating keys, a shaft, an intermediate mechanism transmitting the movement of either of the keys to the shaft and rotating the same a distance dependent upon the articular key operated, a second shaft driven by the first, indicator wheels loosely mounted thereon, and clutch mechanism for engaging each of the wheels with the shaft. in combination with a transversely movable carriage ar.- ranged to operate the clutch mechanism, and controlling mechanism connecting the carriage with the several keys, whereby the movement of a key will rotate the second shaft a fixed distance and engage an indicator wheel with said shaft.

2. In a computing machine, operating keys, a shaft and means for rotating the shaft a distance dependent upon the 'particular key depressed, in combination with a plurality of indicator wheels, loosely mounted upon the shaft each carrying one member of a clutch device, a second clutch member secured to and longitudinally movable on the shaft, a lever. engaging the sec-.-

'ond clutch member, a carriage, and means including a part projectingfrom the carriage to move the lever.

3. In a computing machine, 0 rating keys. a. shaft, means for rotating 1: e shaft a distance dependent upon the particular key operated, and a plurality of indicator wheels loosely mounted upon the shaft. and each provided with one member of a clutch device, in combination with a second com- 'plementa l clutch 7 member secured to the shaft but longitudinally movable thereon, levers each engaging a second clutch memher and by its oscillation adapted to longitudinally move'said clutch member on the sl1aft, lpngitudinallymovable arms each arranged to contact with and operate alever, a transversely vmoyable carriage arranged in its travel to contact'with the arms and move 10 the same, means tending to constantly draw the said carriage in one direction, and for movings aid carriageone step upon the operation of anyone ofthe keys, substantially -as described. v

4.'In.a device of the kind described, a plurality m ovablefkeys, and a correspond. ing inimber of longitudinally movable key operated'bars, incombin'ation witlra corresp nd ing number df bars, each provided withast o or-shoulder arranged in line "1th the travel of the adj acent key operated bag, tl i several; stops extending in a diago- (na direetion' acros's the -ma ehirie, indicator wheels, andirie'anslfor'transmi ting the va- .rio us mo,\;ementsof said bars'to the indicator wheels. l y t 5. In adeviee o'f thekind descril-ied,'. keys, a 'corrs'onding number df' hars, operated "by the keys, a corresponding number of shouldered barsarranged ip'f the line of'the av' .,,q .t 9 l fy. at "bars, her y e achysliouldered'bar is moved a dilferent a slln l'iftlrotated by the shouldered bars a-secon'cllshaftdriven by the first, and 5 i fi r tbsl wed t fi r J fij In adey' ic'e offtliedrind described, keys, ash'aft, corresppnding bars op rated by the keys, a coz responding number of shouldered bar s-to rotate the .shaift a distance dependentd npon the particu lar key operated, a secoli shaft driven by the first, indicator wheels "loosely mounted thereon, a clutch mechanism for the indicator wheels, and l neans controlled by the keys to operate the clutch mechanism of either oi the indicator wheels. i-I a m y'ab e b r device of the kind described, keys, 7 each adapted to be operated by one ofthe keys, stop bars, the several stops extending in a diagonal direction across the machine. whereby each stop bar is'actuat e'd a specific distance varying from all the others, a shaft, a plurality of ratchet wheels m ounted upon said shaft, a plurality of arms loosely mounted upon thesha ft in proximity to the several ratchet wheels, each arm carrying a pawl adapted to engage a ratchet wheel, and links connecting the stop ,bars with the arms to oscillate the same. a secorid shaft driven by .thefirst, indicator loosely mounted thereon, and means jforstransr nitting the movement of either of the koysto either ofi thc indicator wheels means for temporarily locking said wheels.

8. In a device of the kind described, keys. a corresponding number of longitudinally movable bars, each operated by one of the. keys, a corresponding number of longitudinally movable stop bars, each provided with a stop or shoulder arranged in line with the travel of the adjacent key operated bar. the several stops extending in a diagonal direction across the machine, whereby each stop bar is actuated a specific distance varyin from the others, a shaft, means for operating the shaft from the stop bars, a second shaft driven by the first, and indicator wheels loosely mounted on the second shaft and clutch mechanism for independently engaging each of the several wheels with the second shaft.

9. In a device of the kind described, a plurality of keys, a corresponding number of key operated'bars, a corresponding number of longitudinally movable stop bars, the several stops extending in a diagonal direction acrossthe'inachine whereby each stop bar, is moved a distance different 'from the others, a'shaft operated by the stop bars, a second shaft driven by the first, indicator wheels loosely mounted onjthe second shaft, clutch mechanism for connecting the several wheels with the shaft, and a movable carriage arranged. to operate the clutch mechanism. Y

10.' In a computing machine, operatin" -keys, a shaft, means for rotating the sha t a distance dependent upbn the..particular key operated, and a plurality of indicator wheels, loosely moiinted upon 'th ei'sha'tt 'in a plurality of series, each of said whee-ls beingprovided with one merriberdf 'a clutch device, in combination with a second complementa'l clutch member secured to the shaft but longitudinally inovalilc thereon, levers, each e agim ,one of the clutch? members and si diipteil by its oscillation tn longitudinally move said clutch mem ber on the shaftto engage-the clutch member of one of the wheels, longitudinally movable arms, each arranged to contact with and operate a lover, a transversely movable carriage arranged in its travel to contact with the arms and move the same, means tendingconstantly to draw the car- 'riage in its operative direction, and means for releasing said carriage for one interval of movement upon the operation of any one of the keys, substantially as described.

11 In a device ,of the kind described, a sha'ft, a plurality of indicator wheels loosely mounted thereon, clutch mechanism for each.of said wheels adapted to connect the wheel with the shaft, and means for rotating the clutch mechanism. in combination with a parallel shaft, carrying wheelsloosely mounted thereon, each engaging two adja cent indicator wheels, whereby the complete rotation of one indicator wheel will advance lUll that of the next higher order one internal. and controlling means common to a clutch and carrying wheel.

12. In a device of the kind described, a shaft, a plurality of indicato:- wheelsloosely :nounted up n the shaft and arranged in plurality -.i series. clutch mechanism 5')" each of said wheels adapted o engage the same with the shaft. and means for rotat ing the shaft. in combination \iith a paral lel shaft. carrying wheels loosely mounted thereon. each engaging two adjacent indr cator wheels. wheieby the complete rotation of one indicator wheel will advance that of the next higher order one increment. and le' rcrs each CUflllOlllllg a clutch and C;|I'I \'|f|f: wheel.

13. In a computing machine, operating keys, a shaft, means for rotating the shaft :1 distance dependent upon the particular key operated, a plurality of indicator wheels loosely mounted upon the shaft and arranged in a plurality of series, a second shaft driven by the shaft first named, indicator wheels loosely mounted on the second shaft, and means operative upon the movement of either of the keys to connect either of the in dicator wheels of either series on the first shaft with said shaft, and to connect a cor responding indicator on the second shaft, whereby the totals indicated on several series of indicators on the first shaft will be indicated as a grand total on the indicators on the second shaft.

14. In a computing machine, operating lreys, a first shaft, means for rotating the shaft a distanoe dependent upon the articular lrey op'eifated',' a plurality of indicator wheels loosely'mounted" upon said shaft and lirran'ged-ina plurality of series, means for advancing an indicator wheel of higher order one increment to indicate a complete cycle of the indicator of a lower order, a sec ond shaft driven by the first shaft, indicator wheels loosely mounted on the second shaft, means for carrying from the lower order to the higher order of said indicator wheels, and key controlled means for oonnecting ei ther of indicator wheels of either series of the first shaft with said shaft. and to simultaneously connect the corresponding indicator on the second shaft.

15. In a computing machine, operating keys, :1 first shaft, means for rotating the shaft :1 distance dependent upon the particular key operated, a plurality of indicator wheels loosely mounted upOn the shaft. and arranged in a plurality of series, means for carrying from a lower order to a higher or der of said indicator heels, 11 second shaft, mechanism for rotating the second shaft in either direction, from the first shaft. indi cator wheels loosely mounte on the econd shaft, meow: for (arming from the low order to a higlui order of the lll lltfdlflli, lt'cv controlled means for connecting either of theindicator heels of either series on the first shaft to said shaft, and for simulta neously connecting the corresponding indi cator on the second shaft with said second shaft, whereby there may be indicated on the indicators on the second shaft the sum total or the difference between the totals indicated by two series of indicator wheels on the first shaft.

16. In a computing machine, computing mechanism comprising a first shaft provided with t o gear wheels secured thereto, means for rotating the shaft, a plurality of series of indicator wheels mounted on the shaft, and means for engaging each of the indicator wheels with the shaft in combination with a second shaft, provided with gear wheels loosely mounted thereon, one of said ear wheels bein in mesh with one gear whee on the first shaft, and the other with an intermediate gear wheel driven by the second gear heel on the first shaft, and means for engaging either of the gear wheels on the Second shaft with said shaft, whereby the said second shaft may be rotated in either direction, a plurality of indicator wheels loosely mounted on the second shaft, and mechanism whereby the several indicator wheels on the second shaft may be'operated by said shaft as the indicator wheels of either series on the first shaft are operated.

17. The combination with a plurality of computing devices each including denomidational members and gle operating shaft on'which said computing devices 'are carried, an additional computing device, an additional operating member therefor, a movable carriage, means controlled by the carriage for connecting thefirst named computing devices with the pperating shaft, and means also controlled by the carriage for connecting the additional computing device to the additional operating member to be operated thereby in correspondence with each of the computing devices first named.

18. The combination with a shaft, of a plurality of computing devices each including a series of denominational members mounted on said shaft, ca rig mechanism for each of said computing Echoes, an additional shaft, an additional computing device inclndiuga series of denominational members mounted on said additional shaft and having carrying means, a carriage, mechanism controlled by the carriage for connecting the denominational members of the respective computing devices to the respective shafts, and means for operating the shafts.

19 The combination with a shaft. of a plurality of computing devices each includ ing cairvin; I'HC'IDS and a plurality of do II(HI!I[lI.[lOfill members mounted on said shaft, of means for rotating the shaft,

carrying means, of a sin" means for connecting any desired denominational member with the shaft, an additional shaft, a series of denominational members mounted thereon, carrying means for said members, means for connecting to the additional shaft a denominational memher corresponding in denominational posilion to a denominational member connected to the first named shaft, and variable gearing whereby the operation of the first named shaft will rotate the additional shaft in either direction.

20. The combination with a plurality of computing devices each including denominational members and carrying means, of an additional computing device also includin a series of denominational members and carrying means, and means including numeral keys and operating shafts for operating corresponding denominational members of dif ferent computing devices simultaneously and in either the same or opposite directions.

21. The combination with a plurality of computing devices, operating shafts therefor, a series of keys for operating the shafts simultaneously, and means under the control of the keys for connecting corresponding denominational members of different computing devices to the shafts.

22. The combination with a shaft, series of denominational members thereon, carrying mechanism for each series of denominational members, a second shaft, a series of denominational members thereon, carryin mechanism for said members, key controlled means for effecting an operative connection of any desired denominational member with the first shaft, key controlled means for operatively connecting a denominational member of corresponding order to the second shaft, and key controlled means for effectin the simultaneous operation of the two s afts to operate the denominational members connected thereto.

23. The combination with a pair of shafts, a series of keys, means whereby the depression of a key will result in the operation of both shafts, series of denominational members associated with one of the shafts and having carrying mechanism, a series of denominational members associated with the other shaft and likewise having carrying mechanism. and means controlled by the keys for effecting an operative connection between denominational members of corresponding order and the respective shafts.

24. The combination with a pair of shafts, a series of keys, means whereby the depres sion of a key will result in the operation of both shafts in the same or dilferent directions. a series of denominational members associated with one of the shafts and having carrying mechanism, a series of denomina tional members associated with the other shaft and likewise having carrying mechanism, and means controlled by the keys for effecting an operative connection between de nominational members of corresponding order and the respective shafts.

25. The combination with a computing device including a series of denominational members and carrying means, of an operat ing shaft common to the denominational members, clutches controlling the connection of said members with the shaft, a traveling carriage and a plurality of clutch-operating devices movable with the carriage, and means for operating the shaft in either dircction.

26. The combination with two computing devices, keys and an additional computin; device, of a key controlled driving shaft common to all said devices, a carriage, means operated by the carriage to connect the first named computing devices successively with the shaft and a plurality of devices operated by the carriage to bring the additional computing device repeatedly under the control of the keys.

27. The combination with a plurality of computing devices and operating keys, of a sin le controlling device common to a plurahty of computing devices to control the operation thereof by the keys, a single computing'device, an operating shaft and a pluralitly of controlling devices common to the sing e computin device torepeatedly connect the same with-the shaft.

28. The combination with two computing devices, a common operating shaft therefor, an additional 'com utin device and an additional operating 5 aft t erefor, of keys controlling the operation of all of the computing devices by the shafts, a carriage, means operated by the carriage to bring the first named computing devices successively under the control of the keys through the medium of the first named operating shaft, and a plurality of devices operated by the carriage to brin the additional computing device repeated y under the control of the keys through the medium of the additional operating shaft.

29. The combination with a plurality of computing devices and keys, of a plurality of operating shafts for the computing devices, a single controlling device common to a plurality of computing devices to control the operation thereof through the medium of the keys and one operating shaft, and a plurality of controlling devices common to a single computing device to re )eatedly control the operation thereof by tie other operating shaft.

30, The combination with two computing devices, a single operating shaft common to said devices, an additional computing de rice, an additional operating shaft therefor and keys controlling the operation of both operating shafts, of a carriage, a device operated by the carriage successively to bring the first named computing devices into successive operation through the medium of the single operating shaft and a plurality of devices operated by the carriage to bring the additional computing device into operation repeatedly through the medium of the 10 additional operating shaft and in unison with the operations of the two computing devices first named.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

EMANUEL RICHTER. 

